RE: Tune pipes
Ed is going to run those tests -likely this weekend.
On my EFYAK -I placed all servos forward -which allows bateries -to be placeaft as desired I got mine in at 15.25 lbs easily with this setup :1-8611 running a pushrod to elevators and one pull pull 8611 to rudder .
I detest 2 (or 4) elevator servo setups - tho easy to do they are just one more "unknown" on having exact trim throughout entire elevator travel.